code: def test_reshard_nolabels_smiles():
      current_dir = os.path.dirname(os.path.abspath(__file__))
      data_dir = os.path.join(current_dir, "reaction_smiles.csv")
      featurizer = dc.feat.DummyFeaturizer()
      loader = dc.data.CSVLoader(
          tasks=[], feature_field="reactions", featurizer=featurizer
      )
      dataset = loader.create_dataset(data_dir)
      dataset.reshard(shard_size=10)
      assert dataset.get_number_shards() == 1
  
file_path: deepchem/deepchem/data/tests/test_reshard.py
imports: import deepchem
  import numpy
  import os
label_desc: Use image node_id 6 for calling a global function with example usage: test_reshard_nolabels_smiles() without return types